Austin married, in 1836, Emma Wilday (1 February 1811 – 9 May 1879), and was the father of six sons and four daughters, including: • Charles Wilday Austin (19 January 1837 – 1 December 1862) • John Gardiner Austin (19 July 1838 – 8 March 1902), who in September 1901 was appointed a Member of the
Barbados Legislative council.
Sir Harold Austin was his son. • Mehetabel Percy Austin (29 February 1840 – 27 December 1943), who married in 1862
Axel Dickson (1826–1899), a member of the
Swedish parliament of Scottish origin. She was one of few people born on
leap day to celebrate a centennial. ==Legacy==